
Tetrahedron Letters p. 3927 - 3930 (1994)
Update date:2022-08-02
Topics:
Streith, Jacques
Boiron, Arnaud
Sifferlen, Thierry
Strehler, Christiane
Tschamber, Theophile
A pronounced asymmetric induction (d.e. = 95%) was observed during methylation of pyridinium salt 7 with MeMgI which led ultimately to (2R) 2-methyl-2,3-dihydro-4-pyridone 9. This result is best explained by assuming chelate-control during the asymmetric alkylation step.
View MoreShanghai Send Pharmaceutical Technology Co., Ltd.
website:http://www.shsendpharma.com
Contact:021-58088081, +8613585868794
Address::Room A601, Building 1,NO. 800 Qingdai Road Pudong District Shanghai,China
WEIFANG RICHEM INTERNATIONAL LTD
Contact:86-536-2222176
Address:weifang,shandong
Chengdu Cogon Bio-tech Co., Ltd.
Contact:86-28-85171192
Address:NO.52.YongFeng Rd. Chengdu,610041,P.R.China.
Oren Hydrocarbons (Qingdao) Co., Ltd.
Contact:+86-532-68607667-801
Address:Room 3 # 302, No.9 Qingyun Road, Qingdao, China
Hangzhou Ocean Chemical Co., Ltd.
website:http://www.hzoceanchem.com
Contact:+86-571-88025872, 28272092, 28272096
Address:Room 623 ,Building No 1 , COFCO Radius Commercial Center Xiwen Road, Xiacheng District, Hangzhou, Zhejiang Province, China
Doi:10.1211/146080899128734622
(1999)Doi:10.1021/ja01037a025
(1969)Doi:10.1002/ardp.19683010111
(1968)Doi:10.1016/S0960-894X(01)00281-5
(2001)Doi:10.1002/adsc.202000208
(2020)Doi:10.1002/jps.2600601108
(1971)